Change the param type of the category name when editing to allow
for entry of multilang tags, the formatting of which is already
supported when returning category name.
Co-authored-by: Hiroto Kagotani <hiroto.kagotani@gmail.com>
This commit is part of work on Custom fields API,
to minimize commit history in moodle core the work of a team of developers was split
into several commits with different authors but the authorship of individual
lines of code may be different from the commit author.
